"You are the most powerful cultural force in the world."

"Let us all take more responsibility, not only for ourselves and our families but for our communities and our country."

"Let me say this as clearly as I can: No matter how sharp a grievance or how deep a hurt, there is no justification for killing innocents."

"Strength and wisdom are not opposing values."

"Poor Darrell Hammond. What's he going to do when I leave office?"

"There is nothing wrong with America that cannot be cured with what is right in America."

"When I took office, only high energy physicists had ever heard of what is called the Worldwide Web... Now even my cat has its own page."

"Never pick a fight with people who buy ink by the barrel."

"In the new economy, information, education, and motivation are everything."

"One way or the other, we are determined to deny Iraq the capacity to develop weapons of mass destruction and the missiles to deliver them. That is our bottom line."

"You know, everybody makes mistakes when they are president."

"In a world with no systems, with chaos, everything becomes a guerilla struggle, and this predictability is not there. And it becomes almost impossible to save lives, educate kids, develop economies, whatever."

"We must teach our children to resolve their conflicts with words, not weapons."

"Saddam Hussein didn't kill 3,100 people on Sept. 11. Osama bin Laden did, and as far as we know he's still alive."

"A lot of presidential memoirs, they say, are dull and self-serving. I hope mine is interesting and self-serving."

"I am in support of the NRA position on gun control."

"Because primarily of the power of the Internet, people of modest means can band together and amass vast sums of money that can change the world for some public good if they all agree."

"Well, first of all, I think that a lot of the voters who are voting for the tea party candidates have really good impulses. That is, they believe that for years and years and years, the people with wealth and power or government power have done well and ordinary people have not. That's true."

"When we make college more affordable, we make the American dream more achievable."

"When I think about the world I would like to leave to my daughter and the grandchildren I hope to have, it is a world that moves away from unequal, unstable, unsustainable interdependence to integrated communities - locally, nationally and globally - that share the characteristics of all successful communities."

"I haven't eaten at a McDonald's since I became President."

"I don't believe you can find any evidence of the fact that I have changed government policy solely because of a contribution."

"In today's knowledge-based economy, what you earn depends on what you learn. Jobs in the information technology sector, for example, pay 85 percent more than the private sector average."

"Part of our essential humanity is paying respect to what God gave us and what will be here a long time after we're gone."

"American and Israel share a special bond. Our relationship is unique among all nations. Like America, Israel is a strong democracy, a symbol of freedom, and an oasis of liberty, a home to the oppressed and persecuted."

"The new rage is to say that the government is the cause of all our problems, and if only we had no government, we'd have no problems. I can tell you, that contradicts evidence, history, and common sense."

"Where are the jobs going to come from?Small business, manufacturing and clean energy. Where's the money to finance them? The banks and the corporations in America today have lots of money that they can invest right now."

"Today, many companies are reporting that their number one constraint on growth is the inability to hire workers with the necessary skills."

"I like the job. That's what I'll miss the most... I'm not sure anybody ever liked this as much as I've liked it."